Wood Panel Cutting Machine Pressure Device Control
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Solution Overview
Problem
Existing wood panel cutting machines lack precise control over clamping pressure, leading to potential damage of brittle or delicate materials during the cutting process.
Innovation Solution
A cutting machine with a pressure device comprising elastically deformable pressure bars and a torsion bar system, coupled with pneumatic driving cylinders and an electric motor, allows for selective control of clamping pressure and position, ensuring accurate and safe cutting of panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pneumatic driving cylinders are used to move the pressure device, then the device can be actuated between clamping and releasing positions, but precise control of clamping pressure and position is not achieved
Solution Approach 1:
The patent applies parameter changes by transitioning from purely pneumatic actuation to a hybrid system incorporating an electric motor with encoder feedback. This enables precise control of the clamping pressure parameter and position parameter, allowing the system to maintain reliable panel handling without damage while achieving the desired clamping force.
Solution Approach 2:
The patent implements feedback control through the use of an encoder coupled to the electric motor. The encoder provides position feedback that allows the control system to precisely regulate the pressure device position and clamping pressure, resolving the contradiction between achieving precise control and preventing panel damage.
2Manufacturing precision
If pneumatic driving cylinders are used, then the pressure device can be actuated quickly, but accurate control of the lowered clamping position is not achieved
Solution Approach 1:
The patent applies dynamics by combining the fast response characteristic of pneumatic cylinders with the precise positioning capability of an electric motor. The system dynamically switches between pneumatic actuation for speed and electric motor control for precision positioning, achieving both high productivity and manufacturing precision.
Solution Approach 2:
The electric motor acts as an intermediary between the pneumatic system and the pressure device. It receives the pneumatic actuation signal and translates it into precise positional control through encoder feedback, mediating between the speed advantage of pneumatics and the precision requirement of accurate clamping position.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables precise control over clamping pressure and position, effectively preventing damage to brittle or delicate wood panels during cutting, enhancing the machining process.
Implementation Method 1
a torsion bar (12), which extends over the base (3) in direction 8, is pivotally coupled to the bars (10) to rotate, with respect to the bars (10), about a longitudinal axis (13) thereof
Implementation Method 2
a driving device, normally comprising two pneumatic-type driving cylinders mounted on opposite sides of the base
Implementation Method 3
an encoder (not shown) coupled to the bar (12) to provide a feedback signal indicative of the position of the pressure device (9)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method and machine for cutting wood panels (2) or the like, according to which a pressure device (9), adapted to block at least one panel (2) against a resting plane (P), is subjected to an upward push equal to no more than a weight of the pressure device (9) itself while being moved to a lowered clamping position of the panel (2) against the resting plane (P).